[Qgis-user] Georeferencing images

[Nicolas Cadieux]

Hi,
Play with the placement algorithms.  Start with  the basic Helmert with 2 or more points. Anything more than 2 points and you will see where the distortions come from and give you an idea of what your are dealing with.   Finish with Thin Plate Spline (TPS).
Nicolas

> Le 21 juill. 2018 à 14:33, Wolstan H M Dixie <wolstan-dixie at hotmail.co.uk> a écrit :
> 
> Thanks everyone - I discovered the Plugin! However it takes a bit of 
> practice, and sometimes it fails to position the image correctly - I 
> think it needs more that 4 points, probably about 8, to work properly.
> 
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